package com.dawan.sbjy.Config;
import com.auth0.jwt.JWT;
import com.auth0.jwt.JWTVerifier;
import com.auth0.jwt.algorithms.Algorithm;
import com.auth0.jwt.exceptions.JWTDecodeException;
import com.auth0.jwt.exceptions.JWTVerificationException;
import com.dawan.sbjy.service.impl.UserService;
import com.dawan.sbjy.util.RedisPoolUtil;
import net.sf.json.JSONObject;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.lang.reflect.Method;
import java.util.Map;

public class AuthenticationInterceptor implements HandlerInterceptor {
    @Autowired
    UserService userService;
    @Value("${sbjy.jwtsecret}")
    public  String secret;
    @Override
    public boolean preHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object object) throws Exception {
//        String token = httpServletRequest.getHeader("authorization").split(" ")[1];// 从 http 请求头中取出 token
//        // 如果不是映射到方法直接通过
//        if (!(object instanceof HandlerMethod)) {
//            return true;
//        }
//        HandlerMethod handlerMethod = (HandlerMethod) object;
//        Method method = handlerMethod.getMethod();
//        System.out.println(httpServletRequest);
////        //检查是否有passtoken注释，有则跳过认证
////        if (method.isAnnotationPresent(TokenAnnitaion.PassToken.class)) {
////            TokenAnnitaion.PassToken passToken = method.getAnnotation(TokenAnnitaion.PassToken.class);
////            if (passToken.required()) {
////                return true;
////            }
////        }
//        //检查有没有需要用户权限的注解
////        if (method.isAnnotationPresent(TokenAnnitaion.UserLoginToken.class)) {
////            TokenAnnitaion.UserLoginToken userLoginToken = method.getAnnotation(TokenAnnitaion.UserLoginToken.class);
////            if (userLoginToken.required()) {
////                // 执行认证
////                if (token == null) {
////                    throw new RuntimeException("sdsdaassadasd");
////                }
////                // 获取 token 中的 user id
////                String userId;
////                try {
////                    userId = JWT.decode(token).getAudience().get(0);
////                } catch (JWTDecodeException j) {
////                    throw new RuntimeException(j);
////                }
////                Map user = userService.findUserById(userId);
////                if (user == null) {
////                    throw new RuntimeException("用户不存在，请重新登录");
////                }
////                System.out.println(user.get("password").getClass());
////
////                // 验证 token
////                JWTVerifier jwtVerifier = JWT.require(Algorithm.HMAC256((String) user.get("password"))).build();
////                try {
////                    jwtVerifier.verify(token);
////                } catch (JWTVerificationException e) {
////                    throw new RuntimeException("401");
////                }
////                return true;
////            }
////        }
//        // 执行认证
//        if (token == null) {
//            throw new RuntimeException("请重新登陆");
//        }
//        // 获取 token 中的 user id
//        String stringUserInf;
//        String userId;
////        try {
////            stringUserInf = JWT.decode(token).getAudience().get(0);
////            userId= JSONObject.fromObject(stringUserInf).getString("userid");
////        } catch (JWTDecodeException j) {
////            throw new RuntimeException(j);
////        }
////        Map user = userService.findUserById(userId);
////        if (user == null) {
////            throw new RuntimeException("用户不存在，请重新登录");
////        }
//        // 验证 token
//        JWTVerifier jwtVerifier = JWT.require(Algorithm.HMAC256((String) secret)).build();
//        try {
//            jwtVerifier.verify(token);
//        } catch (JWTVerificationException e) {
//            throw new RuntimeException("401");
//        }
        HttpSession session=httpServletRequest.getSession();
        if(session.getAttribute("user_id")!=null){
            return  true;
        }else{
            throw new RuntimeException("401");
        }
    }

    @Override
    public void postHandle(HttpServletRequest httpServletRequest,
                           HttpServletResponse httpServletResponse,
                           Object o, ModelAndView modelAndView) throws Exception {

    }

    @Override
    public void afterCompletion(HttpServletRequest httpServletRequest,
                                HttpServletResponse httpServletResponse,
                                Object o, Exception e) throws Exception {
    }
}